# Input

> A variable used as an input to a subgraph.

## Definition

* **Type:** Field
* **Namespace:** [Unity.GraphToolkit.Editor](/engine/6000.7/script-reference/unity/graphtoolkit/editor.md)
* **Assembly:** UnityEditor

```csharp
Input = 1
```

### Remarks

This kind exposes the variable to the parent graph when the graph is used as a subgraph. The parent graph can provide a value for it.